Duplex envelope



Aug. 2, 1932. w. H. RIFE 1,859,946

DUPLEX ENVELOPE Filed sept. 15, 1928 2 sheets-sheet 1 [71 Veni'of Willi/a m H R zfe.'

Aug. 2, 1932. Wl H, RlFE 1,869,946

' DUPLEX ENVELOPE Filed sepi, 13, 1928 2 sheets-sheet 2 f4 7. gw.; hgf y Invenzof Humm H Rafe.

Patented Aug. 2, 1932 UNrrs srarss ,PATENT means WILLIAM H. RIFE, OF CHICAGO, ILLINOIS DUPLEX ENvELorn l Application mea september r3, 192s. seriali No. 365,658. I

envelope of this type together with margi-V nal reinforcing means.

Another object is to provide a duplerr envelope of a construction particularly adapted for quantity production.

Other advantages will appear hereinafter.

In the drawings, Figure 1 is a plan view of the reverse side of an envelope embodying my invention. c

Fig. 2 is a transverse section taken on line 2 2 of Fig. 1, the upper flap being folded over.

Fig. 3 is a face view of the construction shown in Fig. 1.

Fig. 4 is a transverse section taken on line 4 4 of Fig. 3, the upper flap being tucked within one of the compartments.

Fig. 5 is a plan view of the front side of a modified form of my invention.

Fig. 6 is a transverse section taken on line 6 6 of Fig. 5.

Fig. 7 is a plan view of the reverse side of the construction shown in Fig. 5, parts being broken away with a view to a clearer disclosure thereof, and

F ig. 8 is a transverse section taken on line 8 8 of Fig. 7.

Referring more particularly to the drawings, 11 and 12 designate the top and bottom flaps of a container A, 13 a side closure flap, and 14 a sealing flap, all joined to a body portion 15, the flaps 11, 12 and 13 providing a compartment 16 which may be sealed against inspection by the flap 14. To the reverse side of the container shown in Fig. 1, I affix by a-ny suitable method, such as gumming or pasting, a blank 17 which is cut to provide top and bottom flaps 18, 19 andV end flaps 20, 21. The blank 17 is permanently secured to the container A, as clearly indicated in Figs. 1 and 2, by the gummingV of the flaps 19, 2O and 21 directly over the sealing flaps 11, 12 and 13. In this manner a second smaller compartment 22 is formed between the blank 17 and the exterior wall of the flap 11. It will now be observed that .if desired, first class mail matter 4may be inserted in the'smaller compartment 22 and then sealed against inspectionI by folding over the flap l18vwhich has the gummed sealing border 18. If desired, the large compartment mayserve for mail matter other than rst class by merely tucking inthe flan 18 rather than sealing same. When the flap 18 is folded over and gummed to the front side of the container A, the top edge of this container will be thereby strongly reinforced.

In the modification shown in Figs. 4 to 8 inclusive, a blank 23 is provided the lian of which instead of being folded over theitop edge of the larger container A is placed immediately adjacent the upper edge of the folded flap 12. The blank 23 has top, bottom and side flaps,.24, 25 and 26 respectively. gummed on the reverse sides, the bottom and side flaps serving to permanently seal the blank to the envelope or container A. thereby providing an additional smaller compartment 27, the contents of which may be closed against inspect-ion by sealing the flap 24 insteadof tucking it inside of the smaller compartment.

The modified form above referred to is preferably made by taking a conventional mail container of the type used for inclosing catalogues, books, etc.. and then aiflxing thereto the blank 23. This blank `may be considered as an envelope from which the front wall alone has been removed, although in actual practice I preferably form the blank 23 from paper stock by machine process. the gumming and aifiXing to the envelope A then following in sequence. It isA to be observed frorn the conguration of the blank 23 that the same machine employed in the making of conventional envelopes may be used for the cutting and placing of these blanks in proper position.

While I have described and illustrated the preferred form of construction for carrying my invention into effect, this is capable of Avariation and modification without depart-- ing from theA spirit of the invention. I. therefore, do not wish to` be limitedto the `Drecise details of construction as set forth.

but desire to avail myself of such variations CII and modifications as come within the scope of the appended claim.

What I claim as new and desire to secure by Letters Patent is:

A duplex envelope of the character described, comprising a container formed o a. blank of paper cut to provide a main body portion 'having ltop, bottom, and s'ide `iiztps folded over to provide a. compartment, :L second blank ycut to provide a, second body portion having al bottom ,flap .adapted to tbe sealed over the line of sealing of said top and bottom flaps of said main body portion, fu side flap adapted to be sealed over the line of sealing of one of said side 'flaps oi' saidmain -body portion, and .a .top flap adapted to .be folded over .the ltop V,edge of said main body portion and sealed on theside ofsaid main vbody portion opposite the siderof said main wbody ,portion on Whih said bottom flap of said second body ,portion vis sealed.

In `testimony whereof I have `signed my name vto thisspeoiication.

yW'I'IJLIAM H. RIFE. 

